feat(drafts): DB drafts with deferred numbering — create-as-draft (no number), assign number on finalize (offers/invoices/issued-orders)

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

src/schemas/invoices.schema.ts

@@ -22,7 +22,7 @@ export const CreateInvoiceSchema = z.object({
   invoice_number: z.string().max(255).nullish(),
   order_id: nullableIntIdFromForm.nullish(),
   customer_id: nullableIntIdFromForm.nullish(),
-  status: z.string().max(20).optional().default("issued"),
+  status: z.string().max(20).optional().default("draft"),
   currency: z.string().max(20).optional().default("CZK"),
   vat_rate: numberInRange(0, 100).optional().default(21.0),
   apply_vat: booleanFromForm.optional().default(true),

src/schemas/offers.schema.ts

@@ -36,9 +36,9 @@ export const CreateQuotationSchema = z.object({
   vat_rate: numberInRange(0, 100).optional().default(21.0),
   apply_vat: booleanFromForm.optional().default(true),
   status: z
-    .enum(["active", "ordered", "invalidated"])
+    .enum(["draft", "active", "ordered", "invalidated"])
     .optional()
-    .default("active"),
+    .default("draft"),
   scope_title: z.string().max(255).nullish(),
   scope_description: z.string().max(8000).nullish(),
   items: z.array(QuotationItemSchema).optional(),
@@ -54,7 +54,7 @@ export const UpdateQuotationSchema = z.object({
   language: z.string().max(20).optional(),
   vat_rate: numberInRange(0, 100).optional(),
   apply_vat: booleanFromForm.optional(),
-  status: z.enum(["active", "ordered", "invalidated"]).optional(),
+  status: z.enum(["draft", "active", "ordered", "invalidated"]).optional(),
   scope_title: z.string().max(255).nullish(),
   scope_description: z.string().max(8000).nullish(),
   items: z.array(QuotationItemSchema).optional(),